201104673 六、發明說明： 【發明所屬之技術領域】 本發明大體而言係關於音訊通信，且更特定言之係關於 處理經編碼及/或經壓縮音訊之裝置。 【先前技術】 各種音訊編碼技術為吾人所知。大體而言，當前音訊編 碼涉及處理數位化音訊以減小表示該音訊之數位信號的大 ^ (亦即，頻寬）’同時試圖維持經編碼音訊對原始音訊信 號的保真度。通常將音訊編碼處理㈣稱作音訊壓縮，且 編碼處理程序自身通常駐留於被稱作音訊編解碼器之裝置 中。音訊編碼處理程序可涉及編碼及/或解碼操作。 稱為有損演算法之一些音訊編碼演算法自音訊信號移除 資訊以減小其頻寬。然而，音訊資訊之移除常常導致將雜 说添加至經編碼音訊信號。稱為無損演算法之其他類型的 音訊編碼演算法使用複雜信號處理技術以自音訊信號僅移 除冗餘資訊。此等類型之演算法大體上不將雜訊引入至經 處理之音訊信號中，且因此，產生較高品f的經編碼音訊 信號。 如上文簡要描述’各種類型之音訊編碼處理程序呈有不 =特性，該料性為音訊品f、處理程序複雜性、㈣ 率、功率消耗、處理程序潛時，或其類似者。在,況 下’將需要具有可在不同音訊编聛卢— N曰i扁碼處理程序間選擇以利用 其特性上之差異的裝置。 【發明内容】 146022.doc 201104673 諸如無線頭戴式耳機或揚聲器之攜帶型裝置歸因於其小 尺寸而㊉文電力约束。本文令揭示藉由允許攜帶型裝置在 不同音訊編碼處理程序間選擇而減小此等裝置中之功率消 耗的新穎及非顯而易見的技術。 根據本發明之_態樣，—種設備包括··一感測器，立經 組態以判定一裝置之至少—操作條件；及-選擇器，㈣ 於該操作條件選擇用於該裝置之一第一音訊編碼 序。該第-音訊編碼處理程序使該裝置在處理音訊 ^時：t率比一第二音訊編碼處理程序使該裝置在處理 : =功率少。該音訊可包括語音及/或音訊播 放例如，音樂播放。 根據本發明之另一態樣種方法包含：判定一裝置之 二=:Γ及基於該操作條件選擇用於該裝置之- _序，其中該第—音訊編韻理程序使 «置在處理音訊時消耗之 枉序使 序使該f置在_ ¥ i 、 第一音訊編碼處理程 裝置在處理音訊時消耗之功率少。 根據本發明之又—能媒 看彘夕心樣，—種設備包括：用於判定一妒 置處之一周圍雜訊位準的 疋裝 準自複數個音訊編碼處理 该周圍雜訊位 碼處理程序的構件。'序選擇用於該裝置之-音訊編 根據本發明之另—熊揭 由一或多個處理器執種電腦可讀媒體，其體現可 括：用於判定一裝置之5小_指广集，該電腦可讀媒體包 基於該操作條件選擇用於知作條件的程式石馬；及用於 Λ、置之一第一音訊編碼處理程 146022.doc 201104673 序的耘式碼。該第一音訊編碼處理程序使該裴置消耗之功 率比一第二音訊編碼處理程序使該裝置消耗之功率少。 在審視以下諸圖及實施方式後，其他態樣、特徵、過程 及優點對於熟習此項技術者將為或將變得顯而易見。意欲 所有此等額外特徵、態樣、過程及優點包括於此描述内且 受隨附申請專利範圍的保護。 【實施方式】 應理解，圖式僅用於說明之目的。此外，諸圖中之組件 未必按比例繪製，而是著重於說明本文中所描述之技術及201104673 VI. Description of the Invention: TECHNICAL FIELD OF THE INVENTION The present invention relates generally to audio communications, and more particularly to apparatus for processing encoded and/or compressed audio. [Prior Art] Various audio coding techniques are known to us. In general, current audio coding involves processing digitized audio to reduce the large ^ (i.e., bandwidth) of the digital signal representing the audio while attempting to maintain the fidelity of the encoded audio to the original audio signal. The audio encoding process (4) is often referred to as audio compression, and the encoding process itself typically resides in a device known as an audio codec. The audio encoding process may involve encoding and/or decoding operations. Some audio coding algorithms, known as lossy algorithms, remove information from the audio signal to reduce its bandwidth. However, the removal of audio information often results in the addition of miscellaneous speech to the encoded audio signal. Other types of audio coding algorithms known as lossless algorithms use complex signal processing techniques to remove only redundant information from the audio signal. These types of algorithms generally do not introduce noise into the processed audio signal and, therefore, produce a higher quality f encoded audio signal. As briefly described above, the various types of audio encoding processing programs exhibit non-characteristics, such as audio products f, processing complexity, (four) rate, power consumption, processing program latency, or the like. In this case, it would be necessary to have a device that can be selected between different audio editing programs to take advantage of differences in their characteristics. SUMMARY OF THE INVENTION 146022.doc 201104673 A portable device such as a wireless headset or speaker is constrained by its small size. This document discloses a novel and non-obvious technique for reducing power consumption in such devices by allowing portable devices to be selected between different audio encoding processes. According to the invention, a device comprises: a sensor configured to determine at least one operating condition of a device; and - a selector, (d) for selecting one of the devices for the operating condition The first audio coding sequence. The first audio encoding process causes the device to process the audio: the t rate is less than a second audio encoding process to cause the device to process: = less power. The audio may include voice and/or audio playback such as music playback. Another aspect of the method according to the present invention includes: determining a device==Γ and selecting a sequence for the device based on the operating condition, wherein the first audio programming program causes «to process the audio The order of consumption is such that the f is placed at _ ¥ i , and the first audio encoding process device consumes less power when processing the audio. According to the invention, the device can be used to determine the noise level around one of the devices, and the plurality of audio encoding processes are processed to process the surrounding noise bit code. The component of the program. </ RTI> </ RTI> </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; The computer readable media package selects a program horse for knowing the condition based on the operating condition; and a code for the first audio encoding process 146022.doc 201104673. The first audio encoding process causes the device to consume less power than the second audio encoding process causes the device to consume less power. Other aspects, features, processes, and advantages will be or become apparent to those skilled in the <RTIgt; All such additional features, aspects, processes, and advantages are intended to be included within this description and are protected by the scope of the accompanying claims. [Embodiment] It should be understood that the drawings are for illustrative purposes only. In addition, the components in the figures are not necessarily drawn to scale, but rather to illustrate the techniques described herein and
裝置的原理。在諸圖中，類似參考數字貫穿不同視圖指示 相應部分D 參考且併有圖式之以下實施方式描述且 ^ ^ -----^ η ^ ^ 疋貫施例。展示並充分詳細地描述此等實施例（提供此等 實施例並㈣以限制而是僅用以例證及教示），以使孰習 =術者能夠實踐所主張之内容。因此，為簡潔起見， 也述可省略熟習此項技術者已知之特定資訊。 例=發明:用詞「例示性」以意謂r充當一實例個 解釋為相…文中破描述為「例示性」的任何物件未必 解釋為相比於其他方法或特徵而較佳或有利。 力::π訊裝置(亦即’使用電池之音訊裝靖常受電 ;了保存電池電力，本文中所揭示之裝置基於裝 直之或多個操作條 編碼格式。舉例而言置率消耗位準之音訊 選擇較低功率音電力位準為低的，則 、名碼格式以延長電池壽命。 146022.doc 201104673 轉至圓式及岸s之轉至圖1，展示包括無線頭戴式耳 機102之例不性通信系統！⑼。系統1⑼包括無線頭戴式耳 機102，無線頭戴式耳機102能夠經由一或多個無線鍵路 U〇與一或多個音訊源(例如，諸如音樂播放器104之第一 t訊源及諸如無線通信裝置（WCD⑽之第二音訊源）通 仏。儘管作為音樂播放器1〇4及WCD 1〇8加以說曰月，但音 訊源可為能夠將音訊信號傳輸至頭戴式耳機iG2使得由= 等音訊信號所表示之音訊可自頭戴式耳機1〇2，之揚聲器 輸出的任何裝置。 在例不性通信系統100中，音樂播放器1〇4、WCD 及 頭戴式耳機102經組態以基於頭戴式耳機1〇2之一或多個操 作條件選擇具有不同功率消耗料的音訊編碼袼式。目的 為保存頭戴式耳機102中之電池電力。在頭戴式耳機1〇2與 CD 108或音樂播放器丨〇4之間的服務協商期間，本質上 存在用以判定應使用何種音訊編碼處理程序的兩種方法： 1)頭戴式耳機102判定其操作條件且向WCD 1〇8或音樂播 放器104通知應使用何種音訊編碼處理程序；或 108或音樂播放器1〇4向頭戴式耳機ι〇2詢問其操作條件， 且因此基於該操作條件選擇音訊編碼處理程序。 儘管系統100及頭戴式耳機102不限於Mp3格式化音樂， 但音樂播放器104可為MP3音樂播放器。 儘管例示性通信系統川詩⑶1()8及音_放器1〇4說 明為單獨裝置，但可將該兩個裝置之功能M合成單一無線 裝置，亦即，組合之雙向通信裝置及音樂播放器。 146022.doc 201104673 WCD 108可為能夠進行雙向無線電通信的任何合適通信 裝置，例如，行動無線電、無線電話、個人數位助理 (DA)冑巢式用戶單元、個人電腦、膝上型電腦或其類 、似者。在所展示之實例中，WCD 1G8為能夠與無線通信網 . 4 106内之一或多個基地台通信的裝置。合適無線通信網 路1 〇6之實例包括（但不限於）wiFi、wiMAX、基於分碣多 重存取（CDMA)之網路、WCDMA網路、GSM網路、utms 網路、A鹏料、PHS_或其類㈣路。無線網路ι〇6 包括基礎架構，該基礎架構包含支援與WCD 1〇8之無線語 曰及/或資料通信所必要的彼等網路元件。無線通信基礎 架構包括與WCD 108以及其他終端裝置建立並維持無線通 信之裝備，諸如控制器、收發器及回程。無線基礎架構内 之裝置的類型及數目視特定無線網路而定。舉例而言，典 型蜂巢式網路包括連接至若干基地收發台_)之扇形天 線’ BTS連接至基地台控制器（BSC)，Bsc連接至―（多個） 行動交換中心（MSC)。蜂巢式基地台控制器通常能夠經由 封包資料飼服器節點（PDSN)與基於Ip的網路（諸如，網際 網路）通信。基地台亦能夠經由Msc與公眾交換電話網路 (PSTN)通信。因此’包括於無線網路1〇6中之習知蜂巢式 基地台使用MSC及PSTN在WCD 1〇8與其他電話裝置（諸 如’習知陸上通信線電話）之間提供習知語音連接及電話 服務。 傳輸至頭戴式耳機102及自頭戴式耳機ι〇2傳輸之音訊信 戒可表示任何形式之可辨別聲音，包括（但不限於）語音及 146022.doc 201104673 單耳或立體聲音訊。Μ由無線頻道在I訊源與頭戴式耳機 102之間傳輸的音訊信號可表示以441 KHz之工業標準速 率而取樣之數位化音訊。其他標準速率為8 kHz、Μ kHz、48 kHz，且亦可使用其他速率。 無線鏈路11〇可為使用用於將音訊自任一音訊源ι〇4、 108傳送至頭戴式耳機1〇2之任何合適通信協定的任何合適 無線通信頻道，包括頭戴式耳機1〇2與音訊源1〇4、1〇8之 間的射頻（RF)頻道或紅外線（IR)頻道。在所展示之實例 中，每一無線鏈路110可為藍芽無線鏈路。 g Λ可包括自建立於音樂播放器1〇4與頭戴式耳機之 間的連接所產生的藍芽串流音訊，如A2Dp規格中所描 述。在建立藍芽串流音訊連接之後，音訊封包自第—音訊 源傳輸至頭戴式耳機1〇2。大體而言，該等音訊封包包括 使用所協商之編解碼||標準進行編碼之數位化音訊。每— 音訊封包表示將在頭戴式耳機1G2處輸出的—預定持續時 1 Μ如20毫$ )之聲音。音訊封包可根據規範進行 格式化’ d等音訊封包包括經編碼音訊的—或多個訊框。 可使用任何合適音訊編解碼器（包括（但不限於）原始脈衝碼 調變（PCM)、SBC、ADPCM、AAC、難、Rea卜刪㈡ a Λ MPEG-2音訊及其類似者）編碼音訊。 例讀無線頭戴式耳機1〇2包括兩個聽筒ι〇3及一可選支 ° (Ο頭帶1G5)以用於允許使用者舒適地戴 耳機102 〇 線碩戴式耳機用以提供較大程度之使用者自由，此係 146022.doc 201104673 因為使用者不再由於線而被束缚於音訊源^習知之有線頭 戴式耳機包括在音訊源與任—聽筒或兩個聽筒(該等聽筒 意欲裝配於使用者耳朵上或耳朵内)之間延伸的線。在許 多狀況下，無線頭戴式耳機僅僅為有線頭戴式耳機 之替代 物在此等清况下，無線頭戴式耳機用無線鍵路（通常為 RF或m頻道）代替在頭戴式耳機與音訊源之間延伸的線。 有線及無線頭戴式耳機兩者可與音訊源 一起使用，音訊源 無線電話、行動無線電、個人數位 諸如通信裝置（例如 助理（PDA)、蜂巢式用戶單元及其類似者）以及其他源裝置 (諸如’ MP3播放器、立體聲系統、無線電、視訊遊戲 '個 人電腦、膝上型電腦及其類似者）。 無線頭戴式耳機使用肛或讯無線技術與音訊源通信。已 將此等無線頭戴式耳機通信擴展至個人無線網路，諸如由 可獲自www.bluetooth.c〇m之藍芽規格所定義的網路。藍芽 規格提供用於提供無線頭戴式耳機功能性的特定準則。詳 吕之’藍芽規格提供定義對支援頭戴式耳機使用狀況所必 要之藍芽裝置之要求的頭戴式耳機規範。—旦經組態，頭 戴式耳機便可充當裝置之音訊輸入及/或輸[因此，藍 *路之特疋風行使用為提供用於蜂巢式電話及PDA之無 線碩，式耳機連接性。此外，藍芽規格亦提供定義用於經 由藍芽網路來無線分布高品f立體聲或單聲道音訊之協定 及程序的進階音訊分布規範（danced Audi。Distributi〇nThe principle of the device. In the figures, like reference numerals refer to the corresponding parts of the drawings, and the description of the following embodiments, and the drawings, and ^^ -----^ η ^ ^ 。 。 。 。 。 。 。 These embodiments are shown and described in sufficient detail (these embodiments are provided and (4) are limited to the illustration and teachings), so that the skilled person can practice the claimed content. Therefore, for the sake of brevity, specific information known to those skilled in the art may also be omitted. Example: Invention: The word "exemplary" is used to mean that r serves as an example. Any object that is described as "exemplary" is not necessarily interpreted as preferred or advantageous over other methods or features. Force:: π-device (that is, 'the use of battery audio is often received by electricity; to save battery power, the device disclosed in this article is based on straight or multiple operating strip coding formats. For example, the rate of consumption is The audio selects the lower power tone power level to be low, then the name code format to extend the battery life. 146022.doc 201104673 Turn to the round and shore s turn to Figure 1, showing the example of including the wireless headset 102 The non-sex communication system! (9). The system 1 (9) includes a wireless headset 102 that can be connected to one or more audio sources via one or more wireless keypads (eg, such as a music player 104) The first t source and a wireless communication device (the second audio source of the WCD (10)) are wanted. Although the music player 1〇4 and the WCD 1〇8 are used for the month, the audio source can transmit the audio signal to The headset iG2 enables any audio device to be output from the audio signal of the audio signal such as =, and any device output from the speaker. In the example communication system 100, the music player 1〇4, WCD and Headset 102 The audio coding style with different power consumption materials is selected based on one or more operating conditions of the headset 1 。 2. The purpose is to save the battery power in the headset 102. In the headset 1 〇 2 and During service negotiation between the CD 108 or the music player 丨〇4, there are essentially two methods for determining which audio encoding process should be used: 1) The headset 102 determines its operating conditions and goes to WCD 1 〇8 or music player 104 notifying which audio encoding processing program should be used; or 108 or music player 1-4 inquiring to the operating condition of the headset ι〇2, and thus selecting an audio encoding processing program based on the operating condition Although the system 100 and the headset 102 are not limited to Mp3 formatted music, the music player 104 may be an MP3 music player. Although the exemplary communication system Chuanshi (3) 1 () 8 and the sound player 1 4 are described as Separate devices, but the functions of the two devices can be combined into a single wireless device, that is, a combined two-way communication device and a music player. 146022.doc 201104673 WCD 108 can be capable of two-way radio communication Any suitable communication device, such as a mobile radio, a wireless telephone, a personal digital assistant (DA), a nested subscriber unit, a personal computer, a laptop, or the like. In the example shown, the WCD 1G8 is A device capable of communicating with one or more base stations in a wireless communication network. 4 106. Examples of suitable wireless communication networks 1 包括 6 include, but are not limited to, wiFi, wiMAX, branch-based multiple access (CDMA) based Network, WCDMA network, GSM network, utms network, Apeng, PHS_ or the like (4). The wireless network 〇6 includes the infrastructure, which supports the wireless language with WCD 1〇8.网路 and/or their network components necessary for data communication. The wireless communication infrastructure includes equipment for establishing and maintaining wireless communications with WCD 108 and other terminal devices, such as controllers, transceivers, and backhaul. The type and number of devices within the wireless infrastructure will depend on the particular wireless network. For example, a typical cellular network includes a sector antenna connected to a number of base transceiver stations _) a BTS connected to a base station controller (BSC), and a Bsc connected to a "multiple" mobile switching center (MSC). The cellular base station controller is typically capable of communicating with an IP-based network, such as the Internet, via a packet data feeder node (PDSN). The base station can also communicate with the Public Switched Telephone Network (PSTN) via Msc. Therefore, the conventional cellular base stations included in the wireless network 1-6 use the MSC and the PSTN to provide a conventional voice connection and telephone between the WCD 1 〇 8 and other telephone devices such as the 'native landline telephone line. service. The audio signal transmitted to the headset 102 and transmitted from the headset ι〇2 can represent any form of discernible sound, including (but not limited to) voice and 146022.doc 201104673 single or stereo audio. The audio signal transmitted between the I source and the headset 102 by the wireless channel can represent the digitized audio sampled at an industry standard rate of 441 KHz. Other standard rates are 8 kHz, kHz kHz, 48 kHz, and other rates are also available. The wireless link 11 can be any suitable wireless communication channel using any suitable communication protocol for transmitting audio from any of the audio sources ι 4, 108 to the headset 1, 2, including the headset 1 〇 2 Radio frequency (RF) channel or infrared (IR) channel between audio sources 1〇4, 1〇8. In the example shown, each wireless link 110 can be a Bluetooth wireless link. g Λ may include Bluetooth streaming audio generated from a connection established between the music player 1〇4 and the headset, as described in the A2Dp specification. After the Bluetooth streaming audio connection is established, the audio packet is transmitted from the first audio source to the headset 1〇2. In general, the audio packets include digitized audio encoded using the negotiated codec|| standard. Each - audio packet indicates the sound that will be output at the headset 1G2 - a predetermined duration of 1, for example, 20 milliseconds. The audio packets can be formatted according to specifications. The audio packets, such as d, include encoded audio—or multiple frames. The audio can be encoded using any suitable audio codec (including but not limited to, raw pulse code modulation (PCM), SBC, ADPCM, AAC, Difficulty, Rea (2) a MPEG-2 audio and the like). The example wireless headset 1 〇 2 includes two earpieces ι〇3 and an optional ° (headband 1G5) for allowing the user to comfortably wear the headset 102 硕 硕 硕 用以 用以A large degree of user freedom, this is 146022.doc 201104673 because the user is no longer tied to the audio source due to the line ^The wired headset is included in the audio source and the handset - or two handsets (the handsets A line that is intended to fit between the user's ears or the inside of the ear. In many cases, wireless headsets are just an alternative to wired headsets. In this case, wireless headsets use wireless buttons (usually RF or m channels) instead of headsets. A line extending between the source of the audio. Both wired and wireless headsets can be used with audio sources, audio source radiotelephones, mobile radios, personal digital devices such as communication devices (eg, assistants (PDAs), cellular subscriber units, and the like) and other source devices ( Such as 'MP3 player, stereo system, radio, video game' PC, laptop and the like). The wireless headset communicates with the audio source using an anal or wireless technology. These wireless headset communications have been extended to personal wireless networks, such as those defined by the Bluetooth specification available at www.bluetooth.c〇m. The Bluetooth specification provides specific guidelines for providing the functionality of a wireless headset. The LV's Bluetooth specification provides a specification of the headset that defines the requirements for the Bluetooth device necessary to support the use of the headset. Once configured, the headset can act as an audio input and/or input to the device [thus, the Blue* feature is popular for providing wireless, headset connectivity for cellular phones and PDAs. In addition, the Bluetooth specification provides an advanced audio distribution specification (danced Audi) that defines the protocols and procedures for wirelessly distributing high-quality stereo or mono audio over the Bluetooth network (Danced Audi.
Pr〇fUe，A2DP)。此規範之目的為連接至MP3音樂播放器， 諸如Zune、ipod及其類似者。 146022.doc 201104673 儘s在頭fIG5之情況下加以說明’但頭戴式耳機⑽及 =筒1〇3可具有經調適以將聽筒1〇3牢固地裝配於使用者耳 朵上方或耳朵中的任何合適實體形狀及大小。頭帶105可 視情，自頭戴式耳機102省略。舉例而言，聽筒1〇3可為用 於附者於使用者耳垂後面及使用者耳道上方或使用者耳道 令的習知卡鉤狀聽筒。此外，儘管將頭戴式耳機⑽說明 為具有兩個聽筒103，但頭戴式耳機102可替代地僅包括單 一聽筒。 圖2為說明例示性無線頭戴式耳機200之特定組件的方塊 圖。無線頭戴式耳機2〇〇可作為頭戴式耳機1()2而包括於通Pr〇fUe, A2DP). The purpose of this specification is to connect to an MP3 music player, such as Zune, ipod, and the like. 146022.doc 201104673 As explained in the case of the head fIG5 'but the headset (10) and the =1 can have any adaptation to securely fit the earpiece 1〇3 over the ear or ear of the user. Suitable physical shape and size. The headband 105 can be omitted from the headset 102 as appropriate. For example, the earpiece 1〇3 can be a conventional hook-shaped earpiece for attachment to the user's earlobe and to the user's ear canal or to the user's ear canal. Moreover, although the headset (10) is illustrated as having two earpieces 103, the headset 102 may alternatively include only a single earpiece. 2 is a block diagram illustrating certain components of an exemplary wireless headset 200. The wireless headset 2 can be used as the headset 1 () 2
系統1 〇 〇中，且可治L 了包括無線頭戴式耳機1 02的特徵及功 能。 無線頭戴式耳機200包括—感測器21〇、一選擇器2〇2及 複數個音訊編碼處理程序2〇4、施、綱。感測器加監視 頭戴式耳機2GG之至少—操作條件。感測器2()1將頭戴式耳 機#作條件報告至選擇器2〇2。選擇器搬接著基於該操作 條件選擇音訊編碼處理程序2〇4、2〇6、2〇8中之—者。由 感測益201所量測之操作條件可為剩餘電池能量容量（其可 係基於電池電壓位準）、頭戴式耳機2〇〇處所量測之周圍雜 訊位準’或这剩餘電池能量容量與該周圍雜訊位準的組 口感測器201亦可判定傳入音訊信號之強度，使得可計 异泫曰汛信號對該周圍雜訊位準之信雜比（SNR)。經報告 之操作條件可包括SNR，且因此，選擇器2〇2可使其選擇 基於SNR，或其他操作條件與之組合。 146022.doc 201104673 音訊編碼處理程序204、206、208中之每一者包括可經 實施為音訊編解碼器之音訊解碼處理程序。音訊編碼處理 程序 204、206、208 可各自為 pcm、SBC、ADPCM、 AAC、WMA、Rea卜MPEG-1音訊、MPE(}_2音訊或其類似 者中之一者。可使用軟體、硬體或硬體組件與軟體程式之 任何合適組合來實施音訊編碼處理程序2〇4、2〇6、2〇8。 可使用硬體、軟體或其任何合適組合來實施感測器 201。舉例而言，感測器2〇1可包括用於監視電池電力位準 之市售電力计模組。感測器2〇丨亦可包括用於量測頭戴式 耳機200處之雜訊位準的一或多個麥克風（未圖示），該一或 多個麥克風與用於處理來自麥克風之㈣的音訊處理電路 耦接》 可將選擇器202實施為執行軟體程式之處理器，該軟體 程式用於讀取來自感測器201的輸出及比較該感測器輸出 與各種臨限值以選擇適當音訊編碼處理程序。本文中在下 文描述操作條件及選擇處理程序的特定實例。 在選擇音訊編碼處理程序中的一者之後，頭戴式耳機 接著向試圖將經編碼音訊下載或串流傳輸至頭戴式耳 機⑽的任-農置通知其選擇。在一藍芽無線系統中，可 使用服務發現協定（SDP)實現該通知。藉由SDP，當外部 裝置請求來自頭戴式耳機20。之服務資訊時，頭戴：耳機 _可回應於SDP服務請求而提供選定音訊編碼處理程序 :識別碼：外部裝置可接著組態其音訊編码處理程序以對 〜於由頭戴式耳機200所選擇的處理程序。 146022.doc 201104673 白二ίΓ同編碼處理程序之間選擇的能力可消除或降低 曰編蜗格式譯㉝至另—種音訊編 需要避免在有損Α4^ ^ 、e δίι編碼格式之間譯碼，此係因為該譯碼 通予導致額外雜訊。 圖為說月第一無線頭戴式耳機系統300之特定組件的方 =圖，、。無線頭戴式耳機系統編包括無線頭戴式耳機302及 曰源304，其均能夠經由無線鏈路11G彼此通信。益線頭 ::式耳機系統300可包括於通信系統⑽卜在此狀：下， θ況源3〇4可充當WCD 108及/或音樂播放器104且包括 ⑶108及/或音樂播放器1()4之特徵及 式耳機302可充杏頭哉斗甘η …深瑣戴 田碩戴式耳機102且包括無線頭戴式耳機 102之特徵及功能。 無線頭戴式耳機302包括用於經由無線鏈路m與音訊源 04通L之無線介面3()6。該無線頭戴式耳機亦包括用於監 視至f 一頭戴式耳機操作條件的感測器加。無線介面306 ’ i 助於無線鏈路丨丨Q將頭戴式耳機操作條件傳達 至音訊源3 0 4。 曰、'源3 0 4包括用於經由無線鏈路i i 〇與無線頭戴式耳機 3〇2通仏之無線介面3〇8。音訊源3〇4亦包括一選擇器川及 複數個音訊編碼處理程序312、314、316。選擇器31〇自無 料面3〇8接收頭戴式耳機操作條件。選擇器謂妾著基於 X知作條件選擇音訊編碼處理程序3 、3 μ、3 w中之一 者。提供至選擇器31G之該⑻頭戴式耳機操作條件可為本 文中在上文結合圖2所描述之操作條件。 146022.doc -12- 201104673 音訊編碼處理程序312、3i4、316中之每一者包括可實 施為音訊編解碼器之音訊編碼處理程序。音訊編碼處理程 序312、314、316可各自為卩〇肘、83(：、八0?(：]^、八八<：、 • WMA、Reah MPEG·丨音訊、MpEG 2音訊或其類似者令之 :者。處理程序312、314、3 16中之至少一者對應於頭戴 式耳機302之音訊編碼處理程序204、206、208中之一者。 可使用軟體、硬體或硬體組件與軟體程式之任何合適組合 來實施音訊編碼處理程序312、314、316。 可將選擇器310實施為執行軟體程式之處理器，該軟體 弋用於《賣取來自無線介面3〇8的輸出及比較該感測器輸 出與各種臨限值以選擇適當音訊編碼處理程序。本文中在 下文描述操作條件及選擇處理程序的特定實例。 無線介面306、308可為籃芽無線介面模組。 在操作中，音讯源3 〇4首先經由無線鏈路〖丨〇向頭戴式耳 機302為問其操作條件。在於音訊源_處接㈣操作條件 之後，選擇器310基於頭戴式耳機操作條件及頭戴式耳機 302處可用之編碼處理程序來選擇音訊編碼處理程序η] ' 3 16中的者。音訊源3〇4接著向頭戴式耳機地指示 其選擇，頭戴式耳機302組態其相應音訊編碼處理程序 2〇4、2G6或208以解碼傳入之經編碼音訊。音訊源綱接著 開始將經編碼音訊傳輸至頭戴式耳機3〇2。在使用藍芽益 線系統之情況下，可使用SDp實現操作條件詢問。可使用 A 2 D P在音訊串流開始時由適當資料攔位指示敎音訊編 馬處理私序。若格式不匹配，則音訊源可將音訊課碼 146022.doc 201104673 至由頭戴式耳機302所支援之格式。 圖4為說明第二無線頭戴式耳機系統4〇〇之特定紕件的方 塊圖。無線頭戴式耳機系統4〇〇包括無線頭戴式耳機4〇2及 WCD 404，其均能夠經由無線鏈路丨丨〇彼此通信。無線頭 戴式耳機系統400可充當頭戴式耳機1〇2且包括於通信系統 1〇〇中。WCD 404可充當WCD 108及/或音樂播放器104且 包括WCD 108及/或音樂播放器1〇4之特徵及功能；且無線 頭戴式耳機402可包括無線頭戴式耳機1〇2之特徵及功能。 無線頭戴式耳機402包括天線413、用於經由無線鏈路 ll〇/、WCD 404通彳§的短程無線介面4〇6。無線頭戴式耳機 404亦包括感測p 2〇丨、選擇器4〇8、高保真度音訊編解碼 器4 10、低功率音訊編解碼器4丨2、音訊處理電路41 *、左 聲道數位/類比轉換器（DAC)4I6、右聲道daC 418、左聲 道HPH放大器（Amp)420、右聲道HPH放大器（Amp)422、左 聲道聽筒揚聲器424，及右聲道聽筒揚聲器426。 感測器201監視至少一頭戴式耳機操作條件且將操作條 件報告至選擇器408。 選擇器408基於頭戴式耳機操作條件選擇高保真度音訊 編解碼器410或低功率音訊編解碼器412。該選擇器包括經 組態以偵測傳入音訊串流中之一或多個邊界的偵測器 415。選擇器408經組態以在該等邊界中之一者處於音訊編 解碼器410、412之間切換。邊界可包括無聲週期，如下文 結合圖12所描述。 短程無線介面406包括收發器407且提供與WCD 4〇4的雙 146022.doc •14· 201104673 線二§ :儘管任何合適無線技術可供頭戴式耳機4〇2 -短％無線介面4〇6較佳包括提供至 系統之市售藍芽模組，該至少一藍芽核、、系缔/牙核〜 、· ^ 監牙核心系統由以下各者 =成’天線413、藍芽RF收發器、基頻處理器、協定堆 且’以及用於將該模組連接至音訊編解碼器4H)、412、選 及頭戴式耳機402之其他組件（若需要）的硬體及軟 體介面。 數位化音訊串流係自短程無線介面406輸出且視由選擇 音訊編碼處理程序而由高保真度編解碼器41〇 =低^日訊編解碼器412解碼。數位化音訊流的編碼處 理程序可為與編解碼器41〇、412相容的任何合適方案，且 因此，音訊流可在—些情況下為原始音訊樣本（諸如， ΓΓΓ)，或在其他情況下為絲㈣韻/或壓縮的音 咐如，SBC、ADPCM、AAC、WMA、Real、MPEG# Λ、MPEG-2音訊或其類似者）。 高保真度編解碼器41 〇句乜立％ # 谓包括θ讯解碼處理程序，該 解碼處理程序在操作期間比低功率編解碼器々a之音气解 糾理程序消耗更多功率。大體而言，由音訊編解碼器所 ^耗之功率的量與編解碼器之如以每秒百萬個指令（Μ 所量測的計算複雜性直接相關。若編解碼器執行較大數目 的刪’則該編解碼器大體比以較低數目的職操作之 編解碼器隸更多功率。高保真度編解碼器川可為 編解碼器、WMA編解石馬器、^編解碼器 '聰^音^ 編解碼器、MPEG-2音訊編解碼器或其類似者；且低功率 146022.doc 201104673 編解碼器可為SBC編解碼器。 音訊處理電路414包括用以在數位域中處理經解碼的數 位化音訊信號的數位電路。舉例而言，可藉由音訊處理電 路414將經解碼之音訊串流截斷一或多次、濾波一或多 次、放大-或多次，及增加取樣一或多次。據波可包括低 通濾波、高通濾波及/或使該串流通過特徵在於其他類型 之濾波器功能的濾波器。數位域中之放大可包括可程式化 增益放大器（PGA)的使用。 可使用市售、現成組件貫施音訊處理電路41 4。電路41 * 可包括帛於分開地處理左聲道及右聲道之音訊處理電路。 或者，音訊處理電路414可包括處置左音訊聲道及右音訊 聲C兩者之單-、多工化音訊處理路徑。&，可將音訊處 理電路414之功能的一些或全部實施為處理器上的軟體可 執行碼。 左聲道DAC 416將自音訊處理電路414輸出之左聲道數 位化音訊轉換成左聲道類比音訊信號。接著由音訊放大器 416放大邊左聲道類比音訊信號以驅動左揚聲器心。 右聲道DAC 418將自音訊處理電路414輸出之右聲道數 位化音訊轉換成右聲道類比音訊信號。接著由音訊放大器 422放大該右聲道類比音訊信號以驅動右揚聲器426。 一般熟習此項技術者應理解，除音訊放大器以彳、222之 外的額外類比音訊處理電路（未圖示）可包括於頭戴式 402 中。 左頭戴式耳機揚聲器424及右頭戴式耳機揚聲器似為用 146022.doc -16- 201104673 於將自放大器420、422之輸出之電子信號分別轉換成聲音 之任何合適音訊轉換器。 WCD 404包括一無線廣域網路（WWAN)介面43〇、一或多 個天線411、一短程無線介面436、一具有一處理器及 一記憶體442(儲存選擇器程式444)之控制器438、儲存於 WCD 404上的經編碼音訊446 ’及一音訊譯碼器448。WCD 404可包括用於經由短程無線鏈路11〇及WWAN鏈路進行通 信之單獨天線，或替代地，單一天線可用於兩個鏈路。 WWAN介面430包含與WWAN(諸如上文結合圖1所描述 之無線網路106)通信所必要的整個實體介面。介面43〇包 括經組態以與WWAN交換無線信號之無線收發器432。 WWAN介面430與WWAN交換無線信號以促進經由WWAN 對所連接裝置的語音呼叫及至所連接裝置的資料傳送。所 連接裝置可為另一 WWAN終端機、陸上通信線電話或諸如 語音郵件伺服器、網際網路伺服器或其類似者之網路服務 實體。 短程無線介面434包括收發器4436且提供與無線頭戴式 耳機402的雙向無線通信》儘管任何合適無線技術可供 WCD 404使用，但短程無線介面436較佳包括提供至少一 藍芽天線之市售藍芽模組，藍芽核心系統由以下各項組 成：藍芽RF收發器、基頻處理器、協定堆疊，以及用於將 該模組連接至控制器438及WCD 404之其他組件（若需要）的 硬體及軟體介面。 控制器438經組態以控制WCD 404的整體操作。選擇器 146022.doc •17· 201104673 程式444可由處理器440執行以基於頭戴式耳機4〇2處所選 擇之音訊編碼處理程序來選擇經編碼音訊446或自音訊譯 碼器448輸出之經譯碼音訊輸出以用於下載至頭戴式耳機 4〇2。選擇器程式444經由短程無線介面们4自頭戴式耳機 402接收選定音訊編碼處理程序的指示。 經編碼音訊446可包括用於播放之經編碼音訊的一或多 個檔案。、經編碼音訊446之格式可對應於由高保真度編解 碼器4U)所使用之格式，且可為本文中所描述之音訊編碼 格式中的任—者。經編碼音賴6可儲存於記㈣444中， 或替代地料於包括於WCD 1财之諸如快閃記憶體的單 獨大容量裝置（未圖示）中。 當由頭戴式耳機402選擇低功率編解碼器412時，音㈣ 碼器448將經編碼音訊州譯碼至彼編解碼器所需要的格 式。作為音訊譯碼器448之替代者，㈣⑽何替代地包 f以由低功率編解碼器412所使用之格式編碼的經儲存音 纟#代配置中’經編碼音訊446可呈對應於低 功率編解碼器412之梭y - 真度編解碼器4H)之格^㈣碼音訊可呈對應於高保 可使用類比及/或數付括辦 ^ 组合來-施w…或軟體之任何合適 來，施則404及頭戴式耳機402的組件。 塊m明第三無線頭戴式耳機系統卿之料組件的方 wco J； 戴式耳機“I 無線鏈路U〇彼此通信。無線頭 戴式耳機线5⑽可包括於通信系統⑽卜無線頭戴式耳 146022.doc 201104673 機502可充當無線頭戴式耳機102且包括無線頭戴式耳機 102之特徵及功能。 頭戴式耳機502包括多處S器架構，言玄多處理器架構包 括用於實施至少該選擇器408之控制器5〇4。控制器5〇2亦 可控制頭戴式耳機502及其中所含有之特定組件的整體操 作。控制器504可包括處理器，該處理器可為用於執行儲 存於記憶體中之程式化指令以使頭戴式耳機5〇2執行其如 本文中所描述之功能及處理程序的任何合適處理裝置了舉 例而言，該處理器可為微處理器（諸如，ARM7)、數位信 號處理器（DSP)、一或多個特殊應用積體電路（asic)、場 可程式化閘陣列（FPGA)、複雜可程式化邏輯裝置 (CPLD)、離散邏輯、軟體、硬體、㈣，或其任何合適組 合。該記憶體為用於儲存由該處理器執行並使用之程式化 才曰令及資料的任何合適記憶體裝置。 頭戴式耳機502亦包括用於實施高保真度編解碼器41〇、 低功率編解碼器412及音訊處理電路414之至少一部分的 DSP 506。DSP 506經由-或多個匯流排及控制信號與控制 器504通信。 碩戴式耳機402、502亦可包括麥克風（未圖示），該麥克 風經組態以產生由麥克風預處理器（未圖示）預處理之輸入 音訊信號。可將麥克風預處理器之輸出提供至收發器，在 該收發器中，可接著經由無線鏈路丨1G將該輸出提供至頭 戴式耳機402、502及/或WCD 404中的音訊處理路徑。麥 克風可為用於將聲音轉換成電子信號之任何合適麥克風裝 H6022.doc •19· 201104673 麥克風預處理器經組態以處理自麥克風接收之電子信 號。麥克風預處理器可包括類比/數位轉換器(ADc)及㈣ 減少及回音消除電路（NREC)。ADC將來自麥克風之類比 仏號轉換成數位信號’數位信號接著由nrEC處理。nrec 用以針對通信及語音控制應用而減少不良音訊假影。可使 ==體、軟體、㈣或其任何合適組合來實施麥克風 丄 =Γ。預處理器亦可經.…將周圍雜訊信號 圖6為說明選擇用於無線頭^ ^ ^ ^ ^ ^ 床夕梦 1曰況編碼處理程 序之第—方法600的流程圖。 機之至少—操作條件。在^「Γ 判定頭戴式耳 機操作條件以決定今頭戴2塊604中’檢查頭戴式耳 决疋該碩戴式耳機操作條件是否 率模式操作頭戴式耳機的― 低功 指示以低功率模式#作 〜頭戴式耳機操作條件 θ讯編碼處理程序以用於 k擇低功率 式耳機操作條件未浐干 ，機（區塊608)。若該頭戴 扣不以低功率模式操作 要，則選擇高保真度負戴式耳機的需 (區塊，。低功率音訊編碼=里:序以用於頭戴式耳機 訊處理期間消耗之功率比^ 1 I頭戴式耳機處之音 戴式耳機處之音訊處=真度音訊編碼處理程序在頭 圖7為說明選擇用於ΓΓ功率少。 序之第二方法700的流程：頭戴式耳機之音訊編碼處理程 的_圖。在區塊中，量測指示頭戴 146022.doc .20· 201104673 7=機：餘雷電:能量容f的電池電屋位準。在決策區塊 電力不足（電塵位準與電遷臨限值以判定電池是否 电刀不足（run J〇w)，日1 頭戴式耳機的需要。若量:到疋=示以低功率模式操作 值，則選擇低功率音％編之’電壓位準低於該臨限 (區塊708) #旦 喝處理程序以用於頭戴式耳機 選擇之電池電難準不低於該臨限值，則 ==功=訊編碼處理程序以用於頭戴式耳機（區塊 碼處理程序在頭戴式耳機處之音訊處 耳機产立南保真度音訊編碼處理程序在頭戴式 耳機處之音訊處理期消耗之功率少，且因此 2 機操作更長時間。 峰員戴式耳 頭戴式耳機電池壽命之例示性曲線圖 約為充^電之雪充滿電時，其輪出電屋位準處於或 作時隨著電池隨=準。曲線802展示當頭戴式耳機正操 期間之某-點處， ^電池電星位準。在操作 行放電’使得電夠™進 二:準則電池輸出電壓位準最終減小至或低 =藍=耳機在最小可_位準處 2_" 35。mAh電式耳機電池為—或多個ΑΑΑ電池或-個 mAh電池。可如圓8中 電池隨時間供應的㈣。 斤展不表不由頭戴式耳機 圖9為說明正常及延長之頭戴 曲線圖900，复中蕤 電池#命之例示性 精由在電池輸出電壓位準下降至電屋臨 146022.doc -21- 201104673 延長之;夺:頭戴式耳機切換至較低功率音訊編碼而促成 = 命。在所展示之實例中，當電池輸_位 产車—Λ座頭戴式耳機自刪音訊編碼（其為較高保真 功率編碼方案）切換至SBC音訊編碼（其為較低保 真度、較低功率編石馬方案）。曲線咖展示在不切換之情況 堅位準(正常電池壽命)。曲線嶋示在切 換之情況下的雷、'也私山& p ㈣^ 壓位準（延長之電池壽命）。藉由 低功率編碼方案，可顯著延長頭戴式耳機 在歌樂播放期間，編碼處理程序之間的切換可 4生，因此不存在可感知的音訊故障。 可身提供對其電荷位準之量測，在彼狀況下， 了遥擇切換電壓臨限值Vth為最大電池電荷之2〇%。 序明選擇用於無線頭戴式耳機之音訊編碼處理程 :=Γ0°的流程圖。在區塊_中，量測頭戴式 1位準盥:雜5fL位準。在決策區塊1004中，比較周圍雜 Λ位準與雜訊臨限值 雜#犋蚀田土 頭戴式耳機是否處於十分噪 度音訊編二 見自低保真度編解碼器_ 到 D 9 5fL之間的^異之環境中。若量測 度==位準高於該臨限值，則選擇低功率、低保真 測到之周圍^理私序以用於頭戴式耳機（區塊1006)。若量 1 編碼虛…孔位準不高於該臨限值，則選擇高保真度音 處理程序以用於頭戴式耳機(區塊1008)。低功率立 =處理程序在頭戴式耳機處之音訊處理期間消耗之I ，保真度音訊編碼處理程序在頭戴式耳機處之音訊處 146022.doc *22- 201104673 理期間消耗之功率，丨 間。 因此允許頭戴式耳機操作更長時 圖11為說明基於周圍雜却从，准> A 切換的例示性曲線圓1100 5 訊編碼處理程序之間 對高伴真产二 曲線圖1100之上部線1101描繪The system 1 〇 ,, and can be used to include the features and functions of the wireless headset 102. The wireless headset 200 includes a sensor 21A, a selector 2〇2, and a plurality of audio encoding processing programs 2〇4, shi, and gang. Sensor plus monitoring At least the operating conditions of the headset 2GG. The sensor 2() 1 reports the condition of the headphone # to the selector 2〇2. The selector then selects one of the audio encoding processing programs 2〇4, 2〇6, 2〇8 based on the operating conditions. The operating conditions measured by the sensing benefit 201 may be the remaining battery energy capacity (which may be based on the battery voltage level), the surrounding noise level measured by the headset 2 ' ' or the remaining battery energy The port sensor 201 of the capacity and the surrounding noise level can also determine the strength of the incoming audio signal such that the signal-to-noise ratio (SNR) of the heterogeneous signal to the surrounding noise level can be counted. The reported operating conditions may include the SNR, and thus, the selector 2〇2 may have its selection based on the SNR, or other operating conditions combined therewith. 146022.doc 201104673 Each of the audio encoding processing programs 204, 206, 208 includes an audio decoding processing program that can be implemented as an audio codec. The audio encoding processing programs 204, 206, 208 may each be one of pcm, SBC, ADPCM, AAC, WMA, Rea MPEG-1 audio, MPE (} 2 audio, or the like. Software, hardware or the like may be used. The audio encoding processing program 2〇4, 2〇6, 2〇8 is implemented in any suitable combination of hardware components and software programs. The sensor 201 can be implemented using hardware, software, or any suitable combination thereof. For example, The sensor 2〇1 may include a commercially available power meter module for monitoring battery power levels. The sensor 2〇丨 may also include one for measuring the level of noise at the headset 200 A plurality of microphones (not shown) coupled to the audio processing circuit for processing (4) from the microphone can implement the selector 202 as a processor executing a software program for reading Taking the output from sensor 201 and comparing the sensor output to various thresholds to select an appropriate audio encoding process. Specific examples of operating conditions and selection handlers are described herein below. In selecting an audio encoding process After one The headset then informs the user of the attempt to download or stream the encoded audio to the headset (10). In a Bluetooth wireless system, the notification can be implemented using the Service Discovery Protocol (SDP). By SDP, when the external device requests service information from the headset 20, the headset: the headset _ can provide the selected audio encoding process in response to the SDP service request: the identification code: the external device can then configure it The audio encoding processing program selects the processing program selected by the headset 200. 146022.doc 201104673 The ability to select between the encoding processing program can eliminate or reduce the 曰 蜗 格式 33 33 33 33 to another The audio coding needs to avoid decoding between the lossy ^4^^, e δίι encoding formats, because the decoding leads to additional noise. The picture shows the specific components of the first wireless headset system 300. The wireless headset system includes a wireless headset 302 and a power source 304, each of which is capable of communicating with each other via a wireless link 11G. The headset: the headset system 300 can include The communication system (10) is in this form: the θ condition source 3〇4 can serve as the WCD 108 and/or the music player 104 and includes the features of the CD 108 and/or the music player 1 () 4 and the headset 302 can be filled with apricots. The features and functions of the wireless headset 102 are included in the headset 102. The wireless headset 302 includes a wireless interface 3 for communicating with the audio source 04 via the wireless link m. () 6. The wireless headset also includes a sensor plus for monitoring the operating conditions of a headset. The wireless interface 306'i facilitates the wireless link 丨丨Q to operate the headset. Communicate to the audio source 3 0 4.源, 'Source 3 0 4 includes a wireless interface 3〇8 for communication with the wireless headset through the wireless link i i 。. The audio source 3〇4 also includes a selector and a plurality of audio encoding processes 312, 314, 316. The selector 31 receives the operating conditions of the headset from the no-surface 3〇8. The selector is said to select one of the audio encoding processing programs 3, 3 μ, 3 w based on the X knowledge. The (8) headset operating conditions provided to selector 31G may be the operating conditions described herein above in connection with FIG. 146022.doc -12- 201104673 Each of the audio encoding processing programs 312, 3i4, 316 includes an audio encoding processing program that can be implemented as an audio codec. The audio encoding processing programs 312, 314, 316 can each be elbow, 83 (:, 八 0? (:] ^, 八八 lt;:, WMA, Reah MPEG 丨 讯, MpEG 2 audio or the like Let at least one of the processing programs 312, 314, and 3 16 correspond to one of the audio encoding processing programs 204, 206, 208 of the headset 302. Software, hardware, or hardware components may be used. The audio encoding process 312, 314, 316 is implemented in any suitable combination with the software program. The selector 310 can be implemented as a processor executing a software program for "selling the output from the wireless interface 3"8 and The sensor output is compared to various thresholds to select an appropriate audio encoding process. Specific examples of operating conditions and selection handlers are described herein below. Wireless interfaces 306, 308 may be basket wireless interface modules. The audio source 3 〇4 first asks the operating condition of the headset 302 via the wireless link. After the audio source_intercept (4) operating condition, the selector 310 is based on the operating conditions and head of the headset. Wearing headphones 30 Two available encoding processes are used to select the audio encoding process η] ' 3 16. The audio source 3〇4 then indicates its selection to the headset, and the headset 302 configures its corresponding audio encoding process. Program 2〇4, 2G6 or 208 to decode the incoming encoded audio. The audio source then begins transmitting the encoded audio to the headset 3〇2. In the case of the Bluetooth benefit line system, SDp can be used. To realize the operation condition inquiry, the A 2 DP can be used to indicate the private sequence by the appropriate data block at the beginning of the audio stream. If the format does not match, the audio source can send the audio code 146022.doc 201104673 to the head. The format supported by the headset 302. Figure 4 is a block diagram illustrating the specific components of the second wireless headset system 4. The wireless headset system 4 includes a wireless headset 4〇2 And WCD 404, each of which is capable of communicating with each other via a wireless link. The wireless headset system 400 can function as a headset 1 2 and be included in the communication system 1. The WCD 404 can act as the WCD 108 and / or music player 104 and The features and functions of the WCD 108 and/or the music player 1〇4 are included; and the wireless headset 402 can include the features and functions of the wireless headset 1〇2. The wireless headset 402 includes an antenna 413, The short-range wireless interface 4 〇 6 via the wireless link 110 〇 /, WCD 404. The wireless headset 404 also includes a sensing p 2 〇丨, a selector 4 〇 8, a high-fidelity audio codec 4 10, low-power audio codec 4 丨 2, audio processing circuit 41 *, left channel digital / analog converter (DAC) 4I6, right channel daC 418, left channel HPH amplifier (Amp) 420, right sound A channel HPH amplifier (Amp) 422, a left channel handset speaker 424, and a right channel handset speaker 426. The sensor 201 monitors at least one of the headset operating conditions and reports the operating conditions to the selector 408. The selector 408 selects the high fidelity audio codec 410 or the low power audio codec 412 based on the headset operating conditions. The selector includes a detector 415 configured to detect one or more boundaries in the incoming audio stream. The selector 408 is configured to switch between the audio codecs 410, 412 at one of the boundaries. The boundary may include a silent period, as described below in connection with FIG. The short-range wireless interface 406 includes a transceiver 407 and is provided with a WCD 4〇4 dual 146022.doc •14· 201104673 line two §: although any suitable wireless technology is available for the headset 4〇2 - short % wireless interface 4〇6 Preferably, the commercially available Bluetooth module is provided to the system, and the at least one Bluetooth core, the nucleus/nucleus nucleus, and the nucleus core system are composed of the following: an antenna 413, a Bluetooth RF transceiver. The hardware and software interfaces of the baseband processor, the protocol stack and 'and the module for connecting to the audio codec 4H, 412, and other components of the headset 402, if desired. The digitized audio stream is output from the short range wireless interface 406 and is decoded by the high fidelity codec 41 〇 = low ^ day codec 412 depending on the selected audio encoding process. The encoding process of the digitized audio stream may be any suitable scheme compatible with the codecs 41, 412, and thus, the audio stream may be the original audio sample (such as ΓΓΓ) in some cases, or in other cases The following are silk (four) rhymes / or compressed sounds such as SBC, ADPCM, AAC, WMA, Real, MPEG # Λ, MPEG-2 audio or the like). The high fidelity codec 41 〇 乜 % # # # 包括 θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ In general, the amount of power consumed by the audio codec is directly related to the computational complexity of the codec as measured by millions of instructions per second. If the codec performs a larger number of By deleting, the codec is generally more powerful than a codec with a lower number of jobs. The high-fidelity codec can be a codec, a WMA codec, and a codec. Cong^^^ codec, MPEG-2 audio codec or the like; and low power 146022.doc 201104673 codec can be SBC codec. Audio processing circuit 414 includes processing in the digital domain a digitized circuit for decoding the digitized audio signal. For example, the decoded audio stream may be intercepted one or more times by the audio processing circuit 414, filtered one or more times, amplified - or multiple times, and incremented by one. Or multiple times. The wave may include low pass filtering, high pass filtering, and/or passing the stream through a filter characterized by other types of filter functions. Amplification in the digital domain may include a programmable gain amplifier (PGA) Can be used, commercially available, The components are implemented by the audio processing circuit 41 4. The circuit 41* may include an audio processing circuit that processes the left and right channels separately. Alternatively, the audio processing circuit 414 may include disposing the left audio channel and the right audio signal C. The single-, multiplexed audio processing path of the two can implement some or all of the functions of the audio processing circuit 414 as software executable code on the processor. The left channel DAC 416 will be from the audio processing circuit 414. The output left channel digitized audio is converted to a left channel analog audio signal. The left channel analog signal is then amplified by audio amplifier 416 to drive the left speaker core. Right channel DAC 418 will output the right from audio processing circuit 414. The channel digitalized audio is converted into a right channel analog audio signal. The right channel analog audio signal is then amplified by an audio amplifier 422 to drive the right speaker 426. It is generally understood by those skilled in the art that the audio amplifier is 彳, 222 Additional analog analog audio processing circuitry (not shown) may be included in the headset 402. The left headset speaker 424 and the right headset speaker appear to be Use 146022.doc -16- 201104673 to convert any of the electronic signals from the outputs of amplifiers 420, 422 into any suitable audio converter, respectively. WCD 404 includes a wireless wide area network (WWAN) interface 43 〇, one or more antennas 411. A short-range wireless interface 436, a controller 438 having a processor and a memory 442 (storage selector program 444), an encoded audio 446' stored on the WCD 404, and an audio decoder 448. WCD 404 may include separate antennas for communicating over short-range wireless links 11 and WWAN links, or alternatively, a single antenna may be used for both links. WWAN interface 430 includes the entire physical interface necessary to communicate with a WWAN, such as wireless network 106 described above in connection with FIG. The interface 43 includes a wireless transceiver 432 that is configured to exchange wireless signals with the WWAN. The WWAN interface 430 exchanges wireless signals with the WWAN to facilitate voice calls to connected devices via the WWAN and data transfer to the connected devices. The connected device can be another WWAN terminal, a landline telephone, or a network service entity such as a voicemail server, an internet server, or the like. The short-range wireless interface 434 includes a transceiver 4436 and provides two-way wireless communication with the wireless headset 402. Although any suitable wireless technology is available for the WCD 404, the short-range wireless interface 436 preferably includes a commercially available at least one Bluetooth antenna. The Bluetooth module, the Bluetooth core system consists of: a Bluetooth RF transceiver, a baseband processor, a protocol stack, and other components for connecting the module to controller 438 and WCD 404 (if needed) ) hardware and software interface. Controller 438 is configured to control the overall operation of WCD 404. The selector 146022.doc • 17· 201104673 The program 444 can be executed by the processor 440 to select the encoded audio 446 or the decoded output from the audio decoder 448 based on the audio encoding process selected at the headset 4〇2. The audio output is for downloading to the headset 4〇2. The selector program 444 receives an indication of the selected audio encoding process from the headset 402 via the short range wireless interface 4 . The encoded audio 446 can include one or more files for playing encoded audio. The format of the encoded audio 446 may correspond to the format used by the high fidelity codec 4U) and may be any of the audio encoding formats described herein. The encoded tone 6 can be stored in the memory (4) 444, or alternatively in a separate large-capacity device (not shown) such as a flash memory included in the WCD. When the low power codec 412 is selected by the headset 402, the tone (tetra) codec 448 decodes the encoded audio state to the format required by the codec. As an alternative to the audio decoder 448, (d) (10) instead of the packet f being encoded in the format used by the low power codec 412, the encoded audio 446 may correspond to a low power encoding. The decoder 412 shuttle y - the true codec 4H) grid ^ (four) code audio can be corresponding to the high security can be used analogy and / or number of services ^ combination - -w... or any suitable software, Then 404 and the components of the headset 402. Block m Ming third wireless headset system side of the material component wco J; headset "I wireless link U〇 communicate with each other. Wireless headset line 5 (10) can be included in the communication system (10) wireless headset The earphones 146022.doc 201104673 The machine 502 can function as a wireless headset 102 and include features and functions of the wireless headset 102. The headset 502 includes a plurality of S-device architectures, and the multi-processor architecture includes At least the controller 5〇4 of the selector 408 is implemented. The controller 5〇2 can also control the overall operation of the headset 502 and the specific components contained therein. The controller 504 can include a processor, which can be Any suitable processing means for executing the stylized instructions stored in the memory to cause the headset 5 to perform its functions and processing procedures as described herein. For example, the processor may be microprocessor (such as ARM7), digital signal processor (DSP), one or more special application integrated circuits (asic), field programmable gate array (FPGA), complex programmable logic device (CPLD), discrete logic Software, hard And (4), or any suitable combination thereof. The memory is any suitable memory device for storing stylized instructions and materials executed and used by the processor. The headset 502 also includes for implementing high fidelity. The DSP 506 is at least a portion of the codec 41, the low power codec 412, and the audio processing circuit 414. The DSP 506 communicates with the controller 504 via - or a plurality of bus and control signals. The headset 402, 502 A microphone (not shown) may also be included, the microphone being configured to generate an input audio signal preprocessed by a microphone preprocessor (not shown). The output of the microphone preprocessor may be provided to the transceiver at which the transceiver is The output can then be provided to the audio processing path in the headsets 402, 502 and/or WCD 404 via the wireless link 丨 1G. The microphone can be any suitable microphone for converting sound into an electrical signal. H6022.doc •19· 201104673 The microphone preprocessor is configured to process electronic signals received from the microphone. The microphone preprocessor can include analog/digital converters (ADc) and (d) Less and Echo Cancellation Circuitry (NREC). The ADC converts the analog nickname from the microphone into a digital signal. The digital signal is then processed by nrEC. nrec is used to reduce undesirable audio artifacts for communication and voice control applications. , software, (d), or any suitable combination thereof to implement the microphone 丄 = Γ. The pre-processor can also be used to ... the surrounding noise signal Figure 6 for the description of the choice for the wireless head ^ ^ ^ ^ ^ ^ bed eve 1 situation A flowchart of the method 600 of the encoding process. At least the operating condition of the machine. In the "" determining the operating conditions of the headset to determine the wearing of the head 604, the head is worn. Headphone operating condition rate mode operation of the headset "low power indication in low power mode # do ~ headset operating conditions θ signal encoding processing program for k low power headset operating conditions are not dry, Machine (block 608). If the headband does not operate in the low power mode, then the high fidelity negative headset is required (block, low power audio code = inner: sequence for power consumed during headphone processing) Compared with the sound of the audio headset at the headphone of the ^ 1 I headset = true audio encoding processing program in the first figure 7 to illustrate the choice for less power. The second method 700 of the sequence: head-mounted The audio coding process of the headset is shown in the block. In the block, the measurement indicator is worn 146022.doc .20· 201104673 7= Machine: Yu Lei: The battery capacity of the energy capacity f. The power in the decision block is insufficient. (Electrical dust level and electromigration threshold to determine whether the battery is insufficient (run J〇w), day 1 headset needs. If the amount: to 疋 = shows the operation value in low power mode, then select The low power tone % code 'voltage level is lower than the threshold (block 708) #旦喝处理程序 for the headphone selection battery power is not lower than the threshold, then == work = The code processing program is used for headphones (the block code processing program is at the audio ear of the headset) The machine's Linan fidelity audio encoding process consumes less power during the audio processing period of the headset, and therefore the 2 machine operates longer. The exemplary curve of the battery life of the peak wearer headset The picture is about when the full charge of the electric charge is full, and the battery is in accordance with the battery. The curve 802 shows a certain point during the operation of the headset, ^ battery Star level. Discharge in the operation line 'Enables enough power to enter the second: the standard battery output voltage level is finally reduced to or low = blue = the earphone is at the minimum _ position 2_" 35. mAh electric headphone battery is - Or a plurality of ΑΑΑ batteries or - mAh batteries. It can be supplied as time (8) in the round 8 battery. The jerk does not show the headphones. Figure 9 shows the normal and extended head-worn graph 900, the complex 蕤 battery The example of the life of the #命 is reduced by the battery output voltage level to the electric house 146022.doc -21- 201104673 extended; capture: the headset switches to lower power audio coding to promote = life. In the example, when the battery loses the position of the car - the squat headset Audio coding (which is a higher fidelity power coding scheme) switches to SBC audio coding (which is a lower fidelity, lower power choreograph). Curved coffee shows a strong position without switching (normal battery life) The curve shows the lightning in the case of switching, 'also private mountain' and p (four) ^ pressure level (extended battery life). With low power coding scheme, the headset can be significantly extended in Clarion During this period, the switching between the encoding processes can be 4, so there is no perceptible audio fault. The measurement of the charge level can be provided. In this case, the remote selection switching voltage threshold Vth is the maximum. 2% of battery charge. The program for selecting the audio encoding process for the wireless headset: = Γ 0 ° flow chart. In block _, measure the head-mounted 1 position: miscellaneous 5fL level. In decision block 1004, compare the surrounding churning level and the noise threshold. #犋 田 田 田 是否 是否 是否 是否 是否 是否 是否 是否 是否 是否 是否 是否 是否 是否 是否 是否 是否 是否 是否 是否 是否 是否 是否 是否 是否 是否 是否 是否 自 自 自 自 自 自 自 自 自 自 自 自 自 自In the environment of the difference. If the measure == level is above the threshold, the low power, low fidelity, and the surrounding private order are selected for use in the headset (block 1006). If the amount 1 coded virtual ... hole level is not above the threshold, then a high fidelity tone process is selected for use with the headset (block 1008). Low power vertical = processing program consumes I during audio processing at the headset, fidelity audio encoding processing program at the audio department of the headset 146022.doc *22- 201104673 power consumed during the period, 丨between. Therefore, when the headset is allowed to operate longer, FIG. 11 is an illustrative curve circle based on the surrounding miscellaneous, quasi- > A switching 1100 5 encoding processing procedure between the upper line of the high companion true graph 1100 1101 depicting
了门保真度編解碼器（例如，M 如，SBC)之選擇。該邻-呆，、度編解碼器（例 周圍雜訊位準。去量㈣下°p曲線1102描緣量測到之 (例如，20 dBA)時，選擇訊位準低於雜訊臨限值 耳機處之音訊處理。,量=真度編解碼器以用於頭戴式 臨限值時，選擇低伴；；Γ之周圍雜訊位準高於該雜訊 頭戴式耳機處之=處理度。(亦即，低功旬編解碼器以用於 圖12為說明在頭戴式耳機音 音訊編碼處理程序之間切換…雜歌曲邊界處在 _之上部線-描，圖 如，MP3)或低 ·，阿保真度編解碼器（例 辕PI夕…、度編解碼器（例如，SBC)的選擇。該曲 ·· 0下邛曲線1202描繪隨時間/ 準。杏吾.、日,丨z丨 里叫A的周圍雜訊位 ί伴^測到之周圍雜訊位準低於雜訊臨限值時，可選擇 :到二器以用於頭戴式耳機處之音訊處理。-旦 :周圍雜訊位準高於該雜訊臨限值時，可選擇低二 又（亦即’低功率）編解踩努、 -'、真 理。缺而m 頭戴式耳機處之音訊處 期期間出現:==在歌曲邊界處或在其他無聲週 在—周_位準增二 146022.doc •23- 201104673 延緩高保真度編解碼ϋ(ΜΡ3)至低保真度編解碼印叫之 轉變’直至歌曲！與歌曲2之間的邊界出現為止。周圍雜訊 位準在歌曲2期間減小至低於雜訊臨限值，但音訊編解碼 器並不自低保真度編解石馬器切換至高保真度編解碼器，直 至歌曲2與歌曲3之間的無聲邊界出現為止。 圖13為說明選擇用於無線頭戴式耳機之音訊編碼處理程 序之第四方法1300的流程圖。在區塊咖中 耳機處之周圍雜訊位準。在邑挣”以士 θ +在&塊1304中，量測傳入音訊作 號之強度。在區塊13〇6中， ° ^ 、住7 丁. #得入日Λ佗唬對周圍雜訊 立準之Μ比(⑽)。在決策區塊·中，比較經計算之 1㈣臨限值，以判定頭戴式耳機是否處於相對十分 嗓雜使得使用者將诵f T a Α 見自低保真度編解碼器或高俾 真度音訊編解碼器輸出之音 / 。 山心曰Λ之間的差異之環 SNR低於該臨限值（例 兄Υ右5亥 真度音訊編碼處理程序以用^ 擇低功率、低保 頭戴式耳機（區塊mo)。若 该SNR不低於該臨限值，則選擇高保真度音气 序以用於頭戴式耳機（區塊 馬处理耘 序在頭戴式耳機處之音⑽J。低功率音訊編碼處理程 音訊編碼處理程序在頭戴 阿保真度 功率少，且因此允許頭戴=處之音訊處理期 碩戴式耳機操作更長時間。 當在雜訊消除耳機中播 程序而不管周圍雜訊位準。了、擇-保真度編碼處理 圖14為說明選擇用於無線頭戴式 序之苐五方法1400的ή 汛、扁碼處理程 程圖。在區塊_中，量測指示頭 146022.doc 24· 201104673 戴式耳機之剩餘電池能量容量的電池電壓位準。在決策區 塊1404中，比較電池電壓位準與電壓臨限值以判定電池是 力不足’且因此’是否指示以低功率模式操作頭戴式 耳機的需要。若量測到之電池電壓位準低於該臨限值，則 選擇低功率音訊編碼處理程序以用於頭戴式耳機（區塊 1，。若量測到之電池電壓位準不低於該臨限值，則在 中量測頭戴式耳機處之周圍雜訊位準。在決策區 式耳爐9 /比較周圍雜訊位準與雜訊臨限值，以判定頭戴 1 Jr否處於十分嗔雜使得使用者將通常聽不見自低保 =解碼器或高保真度音訊編解碼器輸出之音訊之間的 則境中。若量測到之周圍雜訊位準高於該臨限值， 耳櫓力率、低保真度音訊編碼處理程序以用於頭戴式 值，則選若量測到之周圍雜訊位準不高於該臨限 呆真度音訊編碼處理程序以用於頭戴式耳機 低功率音訊編碼處理程序在頭戴式耳機處之 間消耗之功率比高保真度音訊編碼處理程序在 處之音訊處理期間消耗之功率少，且因此允許 頭戴式耳機操作更長時間。 明選擇用於無線頭戴式耳機之音訊編碼處理程 耳機的流程圖。在區塊_，量測頭戴式 卞獨之電池電壓位準。名 位準與電厂堅臨限值以判定電：：;了:中’比較電池電厂堅 否扣j疋電池疋否電力不足，且因此，是 日不以&功率模式操作頭 電_位準低於該臨限“測到之 俚則選擇低功率音訊編碼處理 146022.doc •25. 201104673 以用於碩戴式耳機（區塊i5i8)。若量測到之電池電壓 之周圍札限值’則在區塊1506中量測頭戴式耳機處 鱼•”。fi位準。在決策區塊15〇8中，比較周圍雜訊位準 二：臨限值’以判定頭戴式耳機是否處於十分噪雜使得 使用者將诵堂胜t β i &付 編解碼号輪出:：真度編解碼器或高保真度音訊 1出之曰汛之間的差異之環境中。若量測到之 雜訊位準高於該臨限值，則選擇低功率' 低保真度音气 周:處;理程序以用於頭戴式耳機（區塊1518)。若量測到之 ^ 位準不兩於該臨限值，則量測由頭戴式耳機所輸 =曰=信號的強度（區塊1510)。在區塊1512中，計算傳 广曰:ϋ對周圍雜訊位準之信雜比(SNR)。在決策區塊 耳機曰否Γ較經計算之SNR與SNR臨限值，以判定頭戴式 佯直Γ 相料分㈣使得使用者料f聽不見自低 保真度編解碼器或高保真度音訊編解瑪器輸出之音訊之間 =差異之環境中。㈣SNR低於該臨限值，則選擇低功 氏保真度音訊編碼處理程序以用於頭戴式耳機（區塊 碼声理ΓΓΝΙ^低於該臨限值，則選擇高保真度音訊編 碼：理::Γ用於頭戴式耳機(區塊1516)。低功率音訊編 古’外4在頭戴式耳機處之音訊處理期間消耗之功率比 =真度音訊編碼處理程序在頭戴式耳機處之音訊處理期 之功率少’且因此允許頭戴式耳機操作更長時間。 可以硬體、軟體、勒體或其任何合適組合實施系統、裝 、頭戴式耳機及其各別組件之功能性，以及本文中所描 述之方法步驟及區塊。軟體/韌體可為具有可由一或多2 146022.doc • 26 · 201104673 數位電路（諸如，冑處理器、DSP、嵌人式控制器或智慧財 產權（ip)核心）執行的指令集（例如，碼段）之程式。若以軟 體/韌體實施，則該等功能可作為指令或碼在一或多個電 腦可讀媒體上儲存或經由其傳輸。電腦可讀 儲存媒體及通信媒體兩者，通信媒體包括促進將電 自-處傳送至另-處之任何媒體。儲存媒體可為可由電腦 存取之任何可用媒體。藉由實例且非限制，此電腦可讀媒 體可包含RAM、R0M、EEPR〇M、CD_R〇M或其他光碟儲 存裝置、磁碟儲存裝置或其他磁性儲存裝置，或可用於以 指令或資料結構之形式载運或儲存所要程式碼且可由電腦 存取的任何其他媒體。x，可適當地將任何連接稱為電腦 可讀媒體。舉例而t ’若使用同軸電纜、光纖電纜、雙絞 線、數位用戶線(DSL)’或諸如紅外線、無線電及微波之 無線技術自網站、健器或其他遠端源傳輸軟體，則同轴 電繞、光纖電缓、雙絞線、DSL，或諸如紅外線、無線電 及微波之無線技術包括在媒體的定義令。如本文中所使用 的，磁碟及光碟包括緊密光碟（CD)、雷射光碟、光碟、數 ^多功能光碟（DVD)、軟性磁碟及藍光光碟，其中磁碟通 ㊉乂磁[生方式再現資料’而光碟藉由雷射以光學方式再現 資料。上述媒體之組合亦應包括在電腦可讀媒體之範缚 内。 已：述了特定實施例。然而，對此等實施例之各種修改 係可此的’且本文所呈現之原理亦可應用於其他實施例。 舉例而言’可將本文中所揭示之原理應用至其他裝置，諸 146022.doc -27- 201104673 如包括個人數位助理（PDA)及蜂巢式電話之無線裝置、揚 聲器、個人電腦、立體聲系統、視訊遊戲及其類似者。 又，可將本文中所揭示之原理應用於有線頭戴式耳機，其 中頭戴式耳機與音訊源之間的通信鏈路為線，而非無線键 路。此外，可在不脫離申請專利範圍之料的情況下以與 具體揭示之配置不同的配置實施各種組件及/或方法步驟/ 區塊。 服烈笞此項技術者將 莶於此#教示 -夭户；d，j具他售 施例及修改。g丨士，$ &人 ' 虽、&以上說明書及隨附圖杳 【::=Γ意欲_有此等實施例及修二 圆圖1為展示包括無線頭戴式耳機之例示性通信系統的 圖圓=明無線頭戴式耳機之特定組件的方塊圖。The choice of the door fidelity codec (eg, M, eg SBC). The neighbor-to-dwell, degree codec (for example, the surrounding noise level. When the amount (4) is measured by the °p curve 1102 (for example, 20 dBA), the selected bit is lower than the noise threshold. Value audio processing at the headset., quantity = true codec for the head-mounted threshold, select low companion;; the surrounding noise level is higher than the noise headset = The degree of processing. (That is, the low-powered codec is used for the illustration of FIG. 12 to switch between the headphone audio and audio encoding processing programs... the boundary of the miscellaneous song is at the top of the line-picture, eg, MP3 ) or low, A Fidelity codec (for example, PI ... ..., degree codec (for example, SBC) selection. The song · 0 邛 curve 1202 is depicted with time / quasi. Apricot.丨z丨 is called the surrounding noise level of A. When the surrounding noise level is lower than the noise threshold, you can choose: to the second device for audio processing at the headset. - Dan: When the surrounding noise level is higher than the noise threshold, you can choose the second and second (that is, 'low power) to compile the step, -', the truth. The audio of the headset is missing. During the period: == at the song boundary or in other silent weeks - week _ position increased by two 146022.doc • 23- 201104673 delay high fidelity codec ϋ (ΜΡ 3) to low fidelity codec printing Change 'until the song! The boundary between the song and the song 2 appears. The surrounding noise level is reduced to below the noise threshold during song 2, but the audio codec does not decompile the low fidelity. The horse switches to the high fidelity codec until the silent boundary between song 2 and song 3 appears. Figure 13 is a flow diagram illustrating a fourth method 1300 of selecting an audio encoding process for a wireless headset. The noise level around the headphone in the block coffee. In the 邑 ” 以 θ + in & block 1304, measure the strength of the incoming audio number. In block 13 〇 6, ° ^ , live 7 D. #得入日Λ佗唬 周围 Λ佗唬 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对Very noisy so that users will see 诵f T a Α see low-fidelity codec or high-definition audio The output of the decoder / / The difference between the ring of the heart and the heart SNR is lower than the threshold (the brother and the right 5 liters of audio coding processing program to use low power, low security headphones ( Block mo). If the SNR is not lower than the threshold, select a high fidelity tone sequence for the headset (block music processing at the headphone (10) J. Low power The audio coding process audio coding processing program has less power in the headset, and thus allows the headset to operate for a longer period of time during the audio processing period of the headset. When the program is broadcast in the noise cancellation headset, regardless of the surrounding miscellaneous Alignment, selection, and fidelity encoding processing FIG. 14 is a diagram showing a 扁 扁, flat code processing process for selecting the 1400 method for wireless headsets. In block _, the measurement indicator head 146022.doc 24· 201104673 The battery voltage level of the remaining battery energy capacity of the headset. In decision block 1404, the battery voltage level and voltage threshold are compared to determine if the battery is underpower ' and therefore' indicates the need to operate the headset in a low power mode. If the measured battery voltage level is below the threshold, select a low-power audio encoding process for the headset (block 1, if the measured battery voltage level is not lower than the For the limit value, the noise level around the middle of the headphone is measured. In the decision area ear oven 9 / compare the surrounding noise level and the noise threshold to determine whether the head wear 1 Jr is at Very noisy, so that the user will not normally hear the situation between the audio output from the subscribing = decoder or high fidelity audio codec. If the measured noise level is higher than the threshold The deafness rate and low-fidelity audio coding processing program is used for the head-mounted value, and if the measured surrounding noise level is not higher than the threshold-distance audio encoding processing program, The low-power audio encoding process of the headset consumes less power between the headsets than the high-fidelity audio encoding process consumes less during the audio processing, and thus allows the headset to operate longer Time. Ming selected audio for wireless headsets Process flow chart of the headset. In the block _, measuring the battery voltage level of the head-mounted type. The name and the power plant threshold are determined to determine the electricity::; No button j疋 battery 电力 no power shortage, and therefore, the day is not operating in the & power mode _ level is lower than the threshold "measured after the selection of low-power audio encoding processing 146022.doc • 25. 201104673 for the headset (block i5i8). If the measured battery voltage is around the limit value, then in the block 1506, the headphone is measured at the fish. In block 15〇8, compare the surrounding noise level 2: the threshold value to determine whether the headset is very noisy, so that the user will win the t β i & In the context of the difference between the codec or high-fidelity audio 1 and if the measured noise level is above the threshold, select the low-power 'low fidelity sound week : The program is used for the headset (block 1518). If the measured position is not equal to the threshold, then the measurement is performed by The input of the headset = 曰 = signal strength (block 1510). In block 1512, the calculation of the transmission 曰: 信 the signal-to-noise ratio (SNR) of the surrounding noise level. Γ Calculated SNR and SNR threshold to determine the head-mounted Γ Γ Γ ( 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四In the environment between the audio = difference. (4) If the SNR is lower than the threshold, select the low-power fidelity audio encoding process for the headset (block code sound ΓΓΝΙ ^ below the threshold , choose high-fidelity audio coding: Reason:: Γ for headphones (block 1516). Low-power audio editing ancient 'outside 4 power consumption ratio during audio processing at the headset = true The audio encoding process has less power during the audio processing period of the headset and thus allows the headset to operate longer. The functionality of the system, the device, the headset, and its individual components can be implemented in hardware, software, or a suitable combination, and the method steps and blocks described herein. The software/firmware can be a set of instructions that can be executed by one or more 2 146022.doc • 26 · 201104673 digital circuits, such as a 胄 processor, DSP, embedded controller, or intellectual property (ip) core (eg, The code segment) program. If implemented in software/firmware, the functions may be stored or transmitted as one or more computer readable media as instructions or code. Computer readable storage media and communication media, including any media that facilitates the transfer of electricity to another location. The storage medium can be any available media that can be accessed by a computer. By way of example and not limitation, the computer-readable medium can comprise RAM, ROM, EEPR〇M, CD_R〇M or other optical disk storage device, disk storage device or other magnetic storage device, or can be used in an instruction or data structure. Any other medium that carries or stores the desired code and is accessible by the computer. x, any connection may be appropriately referred to as a computer readable medium. For example, if you use coaxial cable, fiber optic cable, twisted pair cable, digital subscriber line (DSL) or wireless technology such as infrared, radio and microwave to transmit software from websites, health devices or other remote sources, then coaxial Winding, fiber optic, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave include definitions in the media. As used herein, magnetic disks and optical disks include compact discs (CDs), laser compact discs, compact discs, multi-function optical discs (DVDs), flexible magnetic discs, and Blu-ray discs. The reproduction of the material 'the optical disc optically reproduces the data by laser. Combinations of the above media should also be included in the context of computer readable media. A specific embodiment has been described. However, various modifications to the embodiments are possible and the principles presented herein may be applied to other embodiments. For example, the principles disclosed herein can be applied to other devices, such as 146022.doc -27- 201104673 such as wireless devices including personal digital assistants (PDAs) and cellular phones, speakers, personal computers, stereo systems, video Games and similar. Moreover, the principles disclosed herein can be applied to wired headsets where the communication link between the headset and the audio source is a line rather than a wireless button. In addition, various components and/or method steps/blocks may be implemented in a configuration different from the specifically disclosed configuration without departing from the scope of the claims. The person who wears this technology will be here. #教示-夭户; d,j has his sales and modifications. g gentleman, $ & person's, & above instructions and accompanying drawings : [::=Γ intends to have such an embodiment and a second diagram 1 to show an exemplary communication system including a wireless headset Figure circle = block diagram of the specific components of the wireless headset.
圖3為說明篦一 始-s山， M 第…、線頭戴式耳機系統之特宕έΒ π 圖。 < 将疋組件的方塊 圖4為說明第-I, 弟一無線碩戴式耳機系統 圖。 特疋組件的方塊 圖 圖5為說明第三無線頭戴式耳機系統之特定組件 的方塊 圖6為說明選擇用於無 庠夕楚 …、、..員戴式耳機之音1姑 序之第—方法的流程圖。 g讯編碼處理程 圖7為說明選擇用於 序之坌-+ …線頌戴式耳機之音邙绝 序之第一方法的流程圖„ 曰戒編碼處理程 I46022.doc •28· 201104673 圖8為說明正常頭戴式耳機電池壽命之曲線圖。 圖9為說明正常及延長之頭戴式耳機電池壽命之曲線 圖’其中藉由切換至較低功率音訊編碼而促成延長之電池 哥命。 圖10為說明選擇用於無線頭戴式耳機之音訊編碼處理程 序之第三方法的流程圖。 圖η為說明基於周圍雜訊位準在音訊編碼處理程序之間 切換的曲線圖。 圖12為說明在頭戴式耳機音訊播放期間於歌曲邊界處在 音訊編碼處理程序之間切換的曲線圖。 之音訊編碼處理程 圖13為說明選擇用於無線頭戴式耳機 序之第四方法的流程圖。 訊編竭處理程 圖14為說明選擇用於無線頭戴式耳機之音 序之第五方法的流程圖。 圖15為說明選擇用於無線頭戴 产咕^ 憐之日汛編碼處理程 序之第六方法的流程圖。 【主要元件符號說明】 100 通信系統 102 無線頭戴式耳機 103 聽筒 104 音樂播放器 105 頭帶 106 無線通信網路 108 無線通信裝置（WCD) 146022.doc -29· 201104673 110 短程無線鏈路 200 無線頭戴式耳機 201 感測器 202 選擇器 204 音訊編碼處理程序 206 音訊編碼處理程序 208 音訊編碼處理程序 300 無線頭戴式耳機系統 302 無線頭戴式耳機 304 音訊源 306 無線介面 308 無線介面 310 選擇器 312 音訊編碼處理程序 314 音訊編碼處理程序 316 音訊編碼處理程序 400 第二無線頭戴式耳機系統 402 無線頭戴式耳機 404 WCD 406 短程無線介面 407 收發器 408 選擇器 410 高保真度音訊編解碼器 411 天線 146022.doc -30- 201104673 412 低功率音訊編解碼器 413 天線 414 音訊處理電路 415 偵測器 416 左聲道數位/類比轉換器（DAC) 418 右聲道DAC 420 左聲道HPH放大器（Amp) 422 右聲道HPH放大器（Amp) 424 左聲道聽筒揚聲器/左頭戴式耳機揚聲器 426 右聲道聽筒揚聲器/右頭戴式耳機揚聲器 430 無線廣域網路（W WAN)介面 432 無線收發器 434 短程無線介面 436 收發器 438 控制器 440 處理器 442 記憶體 444 選擇器程式 446 經編碼音訊 448 音訊譯碼器 500 第三無線頭戴式耳機系統 502 無線頭戴式耳機 504 控制器 506 數位信號處理器（DSP) 146022.doc -31 - 201104673 600 第 一 方 法 700 第 二 方 法 800 例 示 性 曲 線 圖 802 曲 線 900 例 示 性 曲 線 圖 902 曲 線 1000 第 二 方 法 1100 例 示 性 曲 線 圖 1101 上 部線 1102 下 部 曲 線 1200 例 示 性 曲 線 圖 1201 上 部線 1202 下部 曲 線 1300 第 四 方 法 1400 第 五 方 法 1500 第 六 方 法 -32- 146022.docFig. 3 is a diagram showing the characteristics of the first-sand, M-..., line-headphone system. < Block of the 疋 component Fig. 4 is a diagram showing the system of the first-one, wireless-based headset. FIG. 5 is a block diagram illustrating a specific component of a third wireless headset system. FIG. 6 is a diagram illustrating the selection of a sound for a speakerless headset. - A flow chart of the method. G-code encoding process Figure 7 is a flow chart illustrating the first method for selecting the order of the 坌-+ 颂 颂 颂 „ „ „ 编码 编码 I I I I46022.doc • 28· 201104673 Figure 8 To illustrate the battery life of a normal headset. Figure 9 is a graph illustrating the battery life of a normal and extended headset. The battery life is extended by switching to a lower power audio code. 10 is a flow chart illustrating a third method of selecting an audio encoding processing program for a wireless headset. Figure η is a graph illustrating switching between audio encoding processing programs based on surrounding noise levels. A graph of switching between audio encoding processes at a song boundary during audio playback of a headset. Audio encoding process FIG. 13 is a flow chart illustrating a fourth method of selecting a wireless headset sequence. Figure 14 is a flow chart illustrating a fifth method of selecting a sequence for a wireless headset. Figure 15 is a diagram illustrating the selection of a day code for wireless headsets. Flowchart of the sixth method of the program. [Main component symbol description] 100 Communication system 102 Wireless headset 103 Handset 104 Music player 105 Headband 106 Wireless communication network 108 Wireless communication device (WCD) 146022.doc -29 · 201104673 110 Short-range wireless link 200 Wireless headset 201 Sensor 202 Selector 204 Audio encoding processing program 206 Audio encoding processing program 208 Audio encoding processing program 300 Wireless headset system 302 Wireless headset 304 Audio Source 306 Wireless Interface 308 Wireless Interface 310 Selector 312 Audio Encoding Processing Program 314 Audio Encoding Processing Program 316 Audio Encoding Processing Program 400 Second Wireless Headset System 402 Wireless Headset 404 WCD 406 Short Range Wireless Interface 407 Transceiver 408 Selector 410 High Fidelity Audio Codec 411 Antenna 146022.doc -30- 201104673 412 Low Power Audio Codec 413 Antenna 414 Audio Processing Circuit 415 Detector 416 Left Channel Digit/Analog Converter (DAC) 418 Right Channel DAC 420 left channel HPH (Amp) 422 Right Channel HPH Amplifier (Amp) 424 Left Channel Receiver Speaker / Left Headphone Speaker 426 Right Channel Receiver Speaker / Right Headphone Speaker 430 Wireless Wide Area Network (W WAN) Interface 432 Wireless Transceiver 434 Short Range Wireless Interface 436 Transceiver 438 Controller 440 Processor 442 Memory 444 Selector Program 446 Encoded Audio 448 Audio Decoder 500 Third Wireless Headset System 502 Wireless Headset 504 Controller 506 Digital Signal Processor (DSP) 146022.doc -31 - 201104673 600 First Method 700 Second Method 800 Exemplary Graph 802 Curve 900 Exemplary Graph 902 Curve 1000 Second Method 1100 Exemplary Graph 1101 Upper Line 1102 Lower Curve 1200 Exemplary Graph 1201 Upper Line 1202 Lower Curve 1300 Fourth Method 1400 Fifth Method 1500 Sixth Method -32- 146022.doc